Suppose I want to convert midi velocity (0-127) to the number of harmonics.
So vel = 10 would mean 10 harmonics, vel=100 would mean 100 harmonics.

Would I have to make 127 wavetables, each filled with one harmonic more and
then switch to a table depending on the velocity?

Of course I could do it with a filter and one table filled with 127
harmonics, but is there an other way?

Richard




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Hi Richard,

You can use a recursive UDO.  You may want to check out my article in
the Csound Journal:

http://www.csounds.com/journal/2006summer/controlFlow_part2.html

that discusses recursion. You could create a UDO that plays a sine and
then recurses to call another instance if necessary, up to the number
given by velocity.

steven

On Thu, Dec 8, 2011 at 12:48 PM, zappfinger  wrote:
> Suppose I want to convert midi velocity (0-127) to the number of harmonics.
> So vel = 10 would mean 10 harmonics, vel=100 would mean 100 harmonics.
>
> Would I have to make 127 wavetables, each filled with one harmonic more and
> then switch to a table depending on the velocity?
>
> Of course I could do it with a filter and one table filled with 127
> harmonics, but is there an other way?
>
> Richard
>
>
>
>
> --
> View this message in context: http://csound.1045644.n5.nabble.com/midi-velocity-to-number-of-partials-tp5058653p5058653.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
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buzz and gbuzz allow you to dynamically set the number of harmonic partials.


On 8 December 2011 12:48, zappfinger  wrote:
> Suppose I want to convert midi velocity (0-127) to the number of harmonics.
> So vel = 10 would mean 10 harmonics, vel=100 would mean 100 harmonics.
>
> Would I have to make 127 wavetables, each filled with one harmonic more and
> then switch to a table depending on the velocity?
>
> Of course I could do it with a filter and one table filled with 127
> harmonics, but is there an other way?
>
> Richard
>
>
>
>
> --
> View this message in context: http://csound.1045644.n5.nabble.com/midi-velocity-to-number-of-partials-tp5058653p5058653.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug tracker
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i'd say it depends on what you want to do with the single partials. in
natural sounds, each partial 'goes its own way': it has its own envelope
in time. if you want to imitate this behaviour, and create your own
results based on this, you can use something like this:



-m128


sr = 44100
ksmps = 128
nchnls = 1
0dbfs = 1
massign 0, "midi_receive"
gisin ftgen 0, 0, 1025, 10, 1
gienv ftgen 0, 0, 4097, 16, 0, 10, 0, 1, 4087, -6, 0
instr midi_receive
idur = 3
ifreq cpsmidi
ivel veloc
print ivel
indx = 0
loop:
ipart = indx+1 ;number of partial
event_i "i", "play_partial", 0, idur, ifreq, ipart
loop_lt indx, 1, ivel/16, loop
endin
instr play_partial
ifreq = p4
ipart = p5
p3 = p3 * (1/ipart) ;higher partials decay faster
iadd rnd31 p3/3, 0
p3 = p3 + iadd
aenv poscil .1, 1/p3, gienv
apart poscil aenv, ifreq*ipart, gisin
out apart
endin


f 0 99999



this is something like an instrument which reacts as timbre to the
velocity, and adds some random deviations to the partials. you can tell
the play_partial instrument which behaviour you'd like to get.
this (or anything similar) can be put in the form of a recursive udo, as
steven mentioned.
ciao -

	joachim




Am 08.12.2011 13:48, schrieb zappfinger:
> Suppose I want to convert midi velocity (0-127) to the number of harmonics.
> So vel = 10 would mean 10 harmonics, vel=100 would mean 100 harmonics.
> 
> Would I have to make 127 wavetables, each filled with one harmonic more and
> then switch to a table depending on the velocity?
> 
> Of course I could do it with a filter and one table filled with 127
> harmonics, but is there an other way?
> 
> Richard
> 
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/midi-velocity-to-number-of-partials-tp5058653p5058653.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
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>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
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> 
> 


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Nice example Joachim. I've never seen GEN16 used before. When I
checked the manual however it only has 4 p-fields after the GEN
number? Can you explain how you use it? Cheers,

Rory.


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thanks, rory. i use gen16 (which i got to know recently by an example
from iain) in the same way as transeg. this seems to work. but i think
you are right; the manual should be corrected to something like
f # time size 16 val1 dur1 type1 val2 [dur2 type2 val3 ... typeX valN]
ciao -
	j


Am 08.12.2011 21:13, schrieb Rory Walsh:
> Nice example Joachim. I've never seen GEN16 used before. When I
> checked the manual however it only has 4 p-fields after the GEN
> number? Can you explain how you use it? Cheers,
> 
> Rory.
> 
> 
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> 
> 


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yes nice example Joachim, if no one objects i will change the manual
accordingly.

greetings
Menno

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Hmm, I went the buzz road, but it does not work as I expected.
Included is a simple CSD file (ignore the unneeded lines)
When I play louder, I get more harmonics, but the base tones do not stay, so
it looks if buzz does not simply add the harmonics ....

http://csound.1045644.n5.nabble.com/file/n5060122/ESMS.csd ESMS.csd 

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Buzz doesn't modify the strengths of the adjacent harmonics so the
more you have the less intense the lower ones become. Try ivel/3 and
you should hear better. If you want something more natural sounding,
i.e., adjacent harmonics getting less intense the higher they go try
using gbuzz.

Rory.


On 8 December 2011 21:15, zappfinger  wrote:
> Hmm, I went the buzz road, but it does not work as I expected.
> Included is a simple CSD file (ignore the unneeded lines)
> When I play louder, I get more harmonics, but the base tones do not stay, so
> it looks if buzz does not simply add the harmonics ....
>
> http://csound.1045644.n5.nabble.com/file/n5060122/ESMS.csd ESMS.csd
>
> --
> View this message in context: http://csound.1045644.n5.nabble.com/midi-velocity-to-number-of-partials-tp5058653p5060122.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug tracker
>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>


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hi stefan -
thanks for trying my code. i am trying to answer your questions.
there is no loop with poscil, because the frequency input for poscil is
adjusted in a way that the envelope is just performed once. this is the
sense of the statement 1/p3 as frequency input. so, if the duration of a
note is 2 seconds, the frequency of the oscillator is 0.5 hertz, this
means it will cross the whole table (= envelope) in 2 seconds.
to your seconds question: yes, this instrument is independent from how
long you press the key. it's like a pizzicato-like harpsichord here,
because i wanted to focus on the timbre changes. if you want to connect
the actual duration with the time of a key pressed, you have to look at
the release, and then turn off the "slave notes". this is possible - for
instance - with fractional instrument numbers. you can find an example
(07B04) in
http://en.flossmanuals.net/csound/ch045_b-triggering-instrument-instances/
hope this explains, all best -
	joachim


Am 11.12.2011 11:30, schrieb Stefan Thomas:
> Dear Joachim,
> I tried Your code and it works fine on my machine, but I would like to
> ask some questions.
> Why do You use poscil for the envelope? Doesn't it mean You have a loop
> for the envelope?
> And: I've seen that the envelope doensn't stop when You stop playing on
> the midi-keybord.
> When I increase the duration of idur,e.g. idur = 7, then the note last 7
> seconds in every case. How can I avoid this?
> 
> 2011/12/8 joachim heintz >
> 
>     i'd say it depends on what you want to do with the single partials. in
>     natural sounds, each partial 'goes its own way': it has its own envelope
>     in time. if you want to imitate this behaviour, and create your own
>     results based on this, you can use something like this:
> 
>     
>     
>     -m128
>     
>     
>     sr = 44100
>     ksmps = 128
>     nchnls = 1
>     0dbfs = 1
>     massign 0, "midi_receive"
>     gisin ftgen 0, 0, 1025, 10, 1
>     gienv ftgen 0, 0, 4097, 16, 0, 10, 0, 1, 4087, -6, 0
>     instr midi_receive
>     idur = 3
>     ifreq cpsmidi
>     ivel veloc
>     print ivel
>     indx = 0
>     loop:
>     ipart = indx+1 ;number of partial
>     event_i "i", "play_partial", 0, idur, ifreq, ipart
>     loop_lt indx, 1, ivel/16, loop
>     endin
>     instr play_partial
>     ifreq = p4
>     ipart = p5
>     p3 = p3 * (1/ipart) ;higher partials decay faster
>     iadd rnd31 p3/3, 0
>     p3 = p3 + iadd
>     aenv poscil .1, 1/p3, gienv
>     apart poscil aenv, ifreq*ipart, gisin
>     out apart
>     endin
>     
>     
>     f 0 99999
>     
>     
> 
>     this is something like an instrument which reacts as timbre to the
>     velocity, and adds some random deviations to the partials. you can tell
>     the play_partial instrument which behaviour you'd like to get.
>     this (or anything similar) can be put in the form of a recursive udo, as
>     steven mentioned.
>     ciao -
> 
>            joachim
> 
> 
> 
> 
>     Am 08.12.2011 13:48, schrieb zappfinger:
>     > Suppose I want to convert midi velocity (0-127) to the number of
>     harmonics.
>     > So vel = 10 would mean 10 harmonics, vel=100 would mean 100 harmonics.
>     >
>     > Would I have to make 127 wavetables, each filled with one harmonic
>     more and
>     > then switch to a table depending on the velocity?
>     >
>     > Of course I could do it with a filter and one table filled with 127
>     > harmonics, but is there an other way?
>     >
>     > Richard
>     >
>     >
>     >
>     >
>     > --
>     > View this message in context:
>     http://csound.1045644.n5.nabble.com/midi-velocity-to-number-of-partials-tp5058653p5058653.html
>     > Sent from the Csound - General mailing list archive at Nabble.com.
>     >
>     >
>     > Send bugs reports to the Sourceforge bug tracker
>     >            
>     https://sourceforge.net/tracker/?group_id=81968&atid=564599
>     
>     > Discussions of bugs and features can be posted here
>     > To unsubscribe, send email sympa@lists.bath.ac.uk
>      with body "unsubscribe csound"
>     >
>     >
> 
> 
>     Send bugs reports to the Sourceforge bug tracker
>              
>      https://sourceforge.net/tracker/?group_id=81968&atid=564599
>     
>     Discussions of bugs and features can be posted here
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> 
> 


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freut mich, stefan. viel spaß weiter -
	joachim

Am 13.12.2011 09:44, schrieb Stefan Thomas:
> Dear Joachim,
> thanks for Your explanations! It was very halpful for me.
> 
> 
> 2011/12/12 joachim heintz >
> 
>     hi stefan -
>     thanks for trying my code. i am trying to answer your questions.
>     there is no loop with poscil, because the frequency input for poscil is
>     adjusted in a way that the envelope is just performed once. this is the
>     sense of the statement 1/p3 as frequency input. so, if the duration of a
>     note is 2 seconds, the frequency of the oscillator is 0.5 hertz, this
>     means it will cross the whole table (= envelope) in 2 seconds.
>     to your seconds question: yes, this instrument is independent from how
>     long you press the key. it's like a pizzicato-like harpsichord here,
>     because i wanted to focus on the timbre changes. if you want to connect
>     the actual duration with the time of a key pressed, you have to look at
>     the release, and then turn off the "slave notes". this is possible - for
>     instance - with fractional instrument numbers. you can find an example
>     (07B04) in
>     http://en.flossmanuals.net/csound/ch045_b-triggering-instrument-instances/
>     hope this explains, all best -
>            joachim
> 
> 
>     Am 11.12.2011 11:30, schrieb Stefan Thomas:
>     > Dear Joachim,
>     > I tried Your code and it works fine on my machine, but I would like to
>     > ask some questions.
>     > Why do You use poscil for the envelope? Doesn't it mean You have a
>     loop
>     > for the envelope?
>     > And: I've seen that the envelope doensn't stop when You stop
>     playing on
>     > the midi-keybord.
>     > When I increase the duration of idur,e.g. idur = 7, then the note
>     last 7
>     > seconds in every case. How can I avoid this?
>     >
>     > 2011/12/8 joachim heintz            >>
>     >
>     >     i'd say it depends on what you want to do with the single
>     partials. in
>     >     natural sounds, each partial 'goes its own way': it has its
>     own envelope
>     >     in time. if you want to imitate this behaviour, and create
>     your own
>     >     results based on this, you can use something like this:
>     >
>     >     
>     >     
>     >     -m128
>     >     
>     >     
>     >     sr = 44100
>     >     ksmps = 128
>     >     nchnls = 1
>     >     0dbfs = 1
>     >     massign 0, "midi_receive"
>     >     gisin ftgen 0, 0, 1025, 10, 1
>     >     gienv ftgen 0, 0, 4097, 16, 0, 10, 0, 1, 4087, -6, 0
>     >     instr midi_receive
>     >     idur = 3
>     >     ifreq cpsmidi
>     >     ivel veloc
>     >     print ivel
>     >     indx = 0
>     >     loop:
>     >     ipart = indx+1 ;number of partial
>     >     event_i "i", "play_partial", 0, idur, ifreq, ipart
>     >     loop_lt indx, 1, ivel/16, loop
>     >     endin
>     >     instr play_partial
>     >     ifreq = p4
>     >     ipart = p5
>     >     p3 = p3 * (1/ipart) ;higher partials decay faster
>     >     iadd rnd31 p3/3, 0
>     >     p3 = p3 + iadd
>     >     aenv poscil .1, 1/p3, gienv
>     >     apart poscil aenv, ifreq*ipart, gisin
>     >     out apart
>     >     endin
>     >     
>     >     
>     >     f 0 99999
>     >     
>     >     
>     >
>     >     this is something like an instrument which reacts as timbre to the
>     >     velocity, and adds some random deviations to the partials. you
>     can tell
>     >     the play_partial instrument which behaviour you'd like to get.
>     >     this (or anything similar) can be put in the form of a
>     recursive udo, as
>     >     steven mentioned.
>     >     ciao -
>     >
>     >            joachim
>     >
>     >
>     >
>     >
>     >     Am 08.12.2011 13:48, schrieb zappfinger:
>     >     > Suppose I want to convert midi velocity (0-127) to the number of
>     >     harmonics.
>     >     > So vel = 10 would mean 10 harmonics, vel=100 would mean 100
>     harmonics.
>     >     >
>     >     > Would I have to make 127 wavetables, each filled with one
>     harmonic
>     >     more and
>     >     > then switch to a table depending on the velocity?
>     >     >
>     >     > Of course I could do it with a filter and one table filled
>     with 127
>     >     > harmonics, but is there an other way?
>     >     >
>     >     > Richard
>     >     >
>     >     >
>     >     >
>     >     >
>     >     > --
>     >     > View this message in context:
>     >    
>     http://csound.1045644.n5.nabble.com/midi-velocity-to-number-of-partials-tp5058653p5058653.html
>     >     > Sent from the Csound - General mailing list archive at
>     Nabble.com.
>     >     >
>     >     >
>     >     > Send bugs reports to the Sourceforge bug tracker
>     >     >
>     >     https://sourceforge.net/tracker/?group_id=81968&atid=564599
>     
>     >          >
>     >     > Discussions of bugs and features can be posted here
>     >     > To unsubscribe, send email sympa@lists.bath.ac.uk
>     
>     >          > with body "unsubscribe csound"
>     >     >
>     >     >
>     >
>     >
>     >     Send bugs reports to the Sourceforge bug tracker
>     >
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>     
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>     >
>     >
> 
> 
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